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Wu Y, Zhang Y, Zhang W, Huang Y, Lu X, Shang L, Zhou Z, Chen X, Li S, Cheng S, Song Y. The tremendous clinical potential of the microbiota in the treatment of breast cancer: the next frontier. J Cancer Res Clin Oncol 2023; 149:12513-12534. [PMID: 37382675 DOI: 10.1007/s00432-023-05014-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 06/19/2023] [Indexed: 06/30/2023]
Abstract
Although significant advances have been made in the diagnosis and treatment of breast cancer (BC) in recent years, BC remains the most common cancer in women and one of the main causes of death among women worldwide. Currently, more than half of BC patients have no known risk factors, emphasizing the significance of identifying more tumor-related factors. Therefore, we urgently need to find new therapeutic strategies to improve prognosis. Increasing evidence demonstrates that the microbiota is present in a wider range of cancers beyond colorectal cancer. BC and breast tissues also have different types of microbiotas that play a key role in carcinogenesis and in modulating the efficacy of anticancer treatment, for instance, chemotherapy, radiotherapy, and immunotherapy. In recent years, studies have confirmed that the microbiota can be an important factor directly and/or indirectly affecting the occurrence, metastasis and treatment of BC by regulating different biological processes, such as estrogen metabolism, DNA damage, and bacterial metabolite production. Here, we review the different microbiota-focused studies associated with BC and explore the mechanisms of action of the microbiota in BC initiation and metastasis and its application in various therapeutic strategies. We found that the microbiota has vital clinical value in the diagnosis and treatment of BC and could be used as a biomarker for prognosis prediction. Therefore, modulation of the gut microbiota and its metabolites might be a potential target for prevention or therapy in BC.
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Affiliation(s)
- Yang Wu
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Nangang District, Harbin, 150081, China
| | - Yue Zhang
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Wenwen Zhang
- Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Yuanxi Huang
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Nangang District, Harbin, 150081, China
| | - Xiangshi Lu
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Nangang District, Harbin, 150081, China
| | - Lingmin Shang
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Nangang District, Harbin, 150081, China
| | - Zhaoyue Zhou
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Nangang District, Harbin, 150081, China
| | - Xiaolu Chen
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Nangang District, Harbin, 150081, China
| | - Shuhui Li
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Nangang District, Harbin, 150081, China
| | - Shaoqiang Cheng
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Nangang District, Harbin, 150081, China.
| | - Yanni Song
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, 150 Haping Road, Nangang District, Harbin, 150081, China.
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Sui Y, Wu J, Chen J. The Role of Gut Microbial β-Glucuronidase in Estrogen Reactivation and Breast Cancer. Front Cell Dev Biol 2021; 9:631552. [PMID: 34458248 PMCID: PMC8388929 DOI: 10.3389/fcell.2021.631552] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 07/09/2021] [Indexed: 12/15/2022] Open
Abstract
Over the past decade, the gut microbiota has received considerable attention for its interactions with the host. Microbial β-glucuronidase generated by this community has hence aroused concern for its biotransformation activity to a wide range of exogenous (foreign) and endogenous compounds. Lately, the role of gut microbial β-glucuronidase in the pathogenesis of breast cancer has been proposed for its estrogen reactivation activity. This is plausible considering that estrogen glucuronides are the primary products of estrogens' hepatic phase II metabolism and are subject to β-glucuronidase-catalyzed hydrolysis in the gut via bile excretion. However, research in this field is still at its very preliminary stage. This review outlines the biology of microbial β-glucuronidase in the gastrointestinal tract and elaborates on the clues to the existence of microbial β-glucuronidase-estrogen metabolism-breast cancer axis. The research gaps in this field will be discussed and possible strategies to address these challenges are suggested.
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Affiliation(s)
- Yue Sui
- School of Chinese Medicine, The University of Hong Kong, Hong Kong, China
| | - Jianming Wu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, Luzhou Key Laboratory of Activity Screening and Druggability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Jianping Chen
- School of Chinese Medicine, The University of Hong Kong, Hong Kong, China
- Shenzhen Institute of Research and Innovation, The University of Hong Kong, Shenzhen, China
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Amentoflavone from Selaginella tamariscina as a potent inhibitor of gut bacterial β-glucuronidase: Inhibition kinetics and molecular dynamics stimulation. Chem Biol Interact 2021; 340:109453. [PMID: 33785314 DOI: 10.1016/j.cbi.2021.109453] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/15/2021] [Accepted: 03/23/2021] [Indexed: 12/13/2022]
Abstract
Gut bacterial β-glucuronidase (GUS) plays a pivotal role in the metabolism and reactivation of a vast of glucuronide conjugates of both endogenous and xenobiotic compounds in the gastrointestinal tract of human, which has been implicated in certain drug-induced gastrointestinal tract (GI) toxicity in clinic. Inhibitors of gut microbial GUS exhibited great potentials in relieving the drug-induced GI toxicity. In this study, Selaginella tamariscina and its major biflavonoid amentoflavone (AMF) were evaluated for their inhibitory activity against Escherichia coli GUS. Two selective probe substrates for GUS (a specific fluorescent probe substrate for GUS, DDAOG and a classical drug substrate for GUS, SN38G) were used in parallel for charactering the inhibition behaviors. Both the extract of S. tamariscina and its major biflavonoid AMF displayed evident inhibitory effects on GUS, and the IC50 values of AMF against GUS mediated DDAOG and SN-38G hydrolysis were 0.62 and 0.49 μM, respectively. Inhibition kinetics studies indicated that AMF showed mixed type inhibition for GUS-mediated DDAOG hydrolysis, while displayed competitive type inhibition against GUS-mediated SN-38G hydrolysis, with the Ki values of 0.24 and 1.25 μM, respectively. Molecular docking studies and molecular dynamics stimulation results clarified the role of amino acid residues Leu361, Ile363, and Glu413 in the inhibition of AMF on GUS. These results provided some foundations for the potential clinical utility of S. tamariscina and its major biflavonoid AMF for treating drug-induced enteropathy.
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